What began as a simple Oracle version check became a hands-on Debian troubleshooting lesson. I traced a false port conflict, hostname trouble, permission errors, and missing directories until SQL*Plus finally connected to an idle instance—with database creation still ahead.
What started as an attempt to install Debian 13 alongside Omarchy without another USB became an overnight Linux recovery lab involving LUKS, Btrfs subvolumes, Limine, chroot, Cinnamon, LightDM, initramfs, and missing Intel Wi-Fi firmware. By morning, Debian was booting fast, running Cinnamon, and back online.
BalenaEtcher reported success, but my Samsung USB kept returning to Omarchy. A power-cycle test exposed a failing drive that acknowledged writes without permanently storing them.